Epidote For Sale

Epidote is a typically green silicate mineral that forms long, lustrous, prismatic or tabular-shaped crystals. Epidote is most often a dark olive green color but can also be yellowish. While it has no industrial uses and is not used in gem or jewelry making, quality epidote specimens are highly coveted by collectors for their intriguing color and fan-shaped aggregates most crystals form in.

Epidote is also the basis of two separate rocks, epidosite (epidote and quartz) and unakite (epidote and orthoclase feldspar). In the gem trade, unakite has become quite popular for bead making because of its green and pink coloration.

Lustrous Dark Green Epidote Crystals with Quartz - Turkey #303460

8" Lustrous Dark Green Epidote Crystals with Quartz - Turkey

$795

The Mineral Epidote: Formation, Locations, And Associations

Epidote is a captivating and multifaceted mineral admired by geologists, collectors, and crystal enthusiasts alike. Recognized for its striking green hue and unique crystal structures, epidote holds a significant place in the study of mineralogy. This article explores the formation of epidote, its global locations, and common mineral associations.

Epidote forms primarily through metamorphic processes, where pre-existing rocks undergo substantial changes due to high temperature and pressure conditions. It typically develops in regions where hydrothermal activity is present, influencing the alteration of calcium-rich minerals such as plagioclase. This mineral can also emerge during contact metamorphism when igneous intrusions come into contact with sedimentary rocks, triggering complex chemical reactions. The end product is often found within metamorphic rocks like schist and gneiss, as well as skarns—a type of rock that forms from the contact of limestone with magmatic intrusions.

The chemical formula for epidote is Ca2(Al, Fe)3(SiO4)3(OH). The presence of iron in its structure can impact its color, varying from pistachio green to darker, nearly black-green shades. The mineral’s composition results in monoclinic crystal structures that can range from fibrous aggregates to well-formed prismatic crystals.

Global Occurrences of Epidote

Epidote can be found in a variety of geological settings around the world. Some of the most notable locations include:

Alpine Regions: The European Alps are well known for producing stunning epidote specimens. In particular, regions in Italy, Austria, and Switzerland offer exceptional crystals that are highly sought after by collectors.

United States: Epidote can be discovered in several states, with prominent finds in Alaska, Colorado, and California. The Green Monster Mountain in Alaska is renowned for producing some of the most eye-catching epidote crystals, often accompanied by quartz.

Pakistan and Afghanistan: These countries provide significant sources of epidote, frequently in association with other minerals such as clinozoisite and garnet.

Brazil: Known for its vast mineral diversity, Brazil also harbors epidote deposits that can yield well-crystallized specimens.

Common Mineral Associations

Epidote rarely occurs in isolation; it is commonly found in conjunction with other minerals that enhance its aesthetic and scientific value. Notable mineral associations include:

Quartz: This is one of the most prevalent associations, creating visually appealing and highly collectible specimens. The contrast between the clear quartz and the deep green epidote crystals adds to the allure.

Actinolite: This green mineral often forms alongside epidote in metamorphic environments, contributing to complex, visually striking aggregates.

Garnet: Both almandine and grossular garnets are frequently discovered with epidote, particularly in skarn deposits. The combination of red garnet and green epidote offers a rich, contrasting display.

Clinozoisite: As a mineral closely related to epidote, clinozoisite shares similar properties but differs in iron content. The two are often found together, providing a fascinating study in mineralogical variation.

Featured Photos

Lustrous Epidote Crystals with Actinolite - Pakistan #290479

The Mineral Epidote: Formation, Locations, And Associations

Global Occurrences of Epidote

Common Mineral Associations

Featured Photos